Legend:

The above customizes reports 21 and 23 differently. Report 21 will be a green column chart with the given title, and report 23 will be a red area chart with its given title. Both charts will inherit the {{{[viz]}}} section's width and height, however.

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'''Important''': whereas the {{{options}}} option ''adds'' to the {{{[viz]}}} section's {{{options}}}, all other options ''override'' the {{{[viz]}}} section's options.